Sash-holder



(No' Model.)

G. A. COOPER.

SASH HOLDER.

110.451,31). Patented Apr. 28, 1891.

N HN NTTED STATES PATENT OFFICE.

GEORGE ALBERT COOPER, OF ALAMEDA, CALIFORNIA.

SASH-HOLDER.

SPECIFICATION forming part of Letters Patent No. 451,319, dated April 28, 1891. Application filed November 21, 1890. Serial No. 372,240. (No model.)

To all whom it may concern.' y

Be it kno-wn that I, GEORGE ALBERT Coor- ER, a citizen of the United States, residing at Alameda, Alameda county, State of California, have invented an Improvement in Sash- Locks; and I hereby declare the following to be a full, clear, and exact description of the saine.

My invention relates to that class of sashlocks in which eccentrics or cams operate against the sashes to hold them.

My invention consists in the novel construction, arrangement, and combination of part-s hereinafter fully described, and specifically pointed out in the claims.

The object of my invention is to provide a simple and eifective device adapted to operate on both sashes, automatic in its locking action, conveniently located, preventing any rattling of the sashes, and capable of being used as a right or left hand lock, as may be desired.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure l is a horizontal section on line @coc of Fig. 2. Fig. 2 is a section on line g/ y of Fig. l. Fig. 3 is a detail perspective of the thumb-wheels and lever L.

A is a window frame or casing in which is a lower sash B and the upper sash C, both sashes being balanced in any suitable manner.

Secured to the inner face or jamb of one side of the casing and about midway of its height is a plate D, having bearings cl on its back, in which said bearings are journaled the shafts E and F, which carry the cams or dogs G and H, respectively. The shaft E is a hollow or tubular one, and the shaft F passes freely through it and projects beyond it at both ends. The cam or dog G is mounted fast upon the end of the shaft E in asuitable manner, as by means of a spline or feather, and the cam or dog II is similarly mounted upon the end of the shaft F. The cam or dog G bears against the inner surface of the lower sash-stile, while the cam or dog II bears against the inner surface of the upper saslrstile. These cams are preferably toothed, as shown. They are reversed with respect to each other, and they bear on the sashes in such a manner that any attempt to raise the lower sash causes the binding or cramping effcct thereon of the cam or dog G, and any attempt to lower the upper sash causes the binding or cramping thereon of the cam or dog II. The lower sash may, however, be readily pushed down, as by that movement it simply slips by the inner or bearing end of the cam or dog, and likewise the upper sash may be raised Without operating its cam or dog. Now in order to relieve the sashes from the cams or dogs I have upon the other end of the shaft E a thumb-wheel I, and upon the projecting end of the shaft F. I have a thumbwheel J. These wheels project through the jamb of the window-casing and are within convenient reach. They are made concave or hollow, and between them they form a box or casing in which is the spiral spring K, one end of which is attached to one wheel and the other end is attached to the other wheel, whereby said wheels are forced by the same spring in opposite directions, thereby returning and holding the reversed cams or dogs to their normal position against the sides of the sashes. The back of the plate D is provided or formed with a casin g d', which incloses the cams or dogs.

The operation of the lock is as follows: As before stated, each sash may be readily moved to a closed position withoutinterference from the lock, as the bearing of the cams is such that by such movement they are not affected. In this closed position each sash is firmly locked, because any attempt to open it results in the turning of the cam or dog and its binding or cramping effect upon the sash, and this effectis increased the more the attempt is made to force the sash open. In order to raise the lower sash, the th limb-Wheel I is turned,where by through the shaft E the cam or dog G is turned away from its bearing with the stile ,of sash B, and being held in this position the sash can then be raised to the point desired. When this is reached, the thumb-wheel I is released and the spring K throws the cam or dogG back to its bearing against the sash, thereby again being in readiness to lock it against any attempt to open it farther, but still allowing it to be closed down when desired. In this position, of course, it will remain by reason of its balance, as usual.

IOO

Vhen the upper sash is desired to be lowered, the thumb-wheel J is turned, whereby it releases the cam or dog H, relieving the sash, which may then be lowered to the point desired. Then by releasing the thumb-wheel the cam or dog returns to its normal position under the power of spring K and the sash can then be lowered no farther, though it can be raised to a closed position.

The object of the casing d inclosing the cams or dogs is to prevent rain or water from getting into the easing through the apertures in which the cams or dogs work. The spring K is held under tension bythe bearing of the cams or dogs against the sashes, and said spring, located as described, may be long enough to permitany desired turn to the cams or dogs, which will therefore press normally against the sashes, no matter how loose they may be i-n the frame. It follows also from this that these cams or dogs pressing against the sashes serve as anti-rattlers and hold the sashes tight in the frame. The locking is automatic, and but one mechanism is needed to afect both sashes.

The whole device is out of the way of blinds and shades, does not weaken the frame or sash, and can be readily reversed to serve on the other side ofthe -window as a left-hand lock, if desired.

In order to hold the cams or dogs disengaged for any length of time, and thus leave the sashes free for cleaning orotherpurposes,

I have a pivoted lever Il connected with the plate D and adapted to be moved into and out of engagement with the teeth or fingerpieces on the rims of the wheels Iand J, thus holding them and keeping the dogs or cams away from the sash-stiles.

Having thus described my invention, what-I claim as new, and desire to secure by Letters Patent, is-

1. A sash-lock comprising a cam or dog adapted to bear against the sash, a thumbwheel and shaft for actuating the cam, and a locking device engaging and locking the thumb wheel, substantially as herein described.

2. A sash-lock consisting of a swinging cam or dog in the jamb of the window-casing and operatingagainst the inner surface of the sash-stle, a rock-shafton which said cam or dog is mounted, a thumbwvheel to relieve it from the sash, and a spring within the handwheel to return said dog to position,substan tially as herein described.

3. A sash-lock consisting of the independ ent reversed cams or dogs'in the jamb of the window-casing, operating ,against the inner surface of the stiles of the lower and upper sashes, the concentric shafts upon which said cams or dogs are mounted, the independent thumb-wheels on said shafts for releasing the cams or dogs, and a spring between the thumbwheels connected with both for returning said cams or dogs to position, substantially as herein described.

4. In a sash-lock, the combination of the reversed cams or dogs, the concentric shafts carrying them, the thumb wheels of said shafts, and the swinging lever L, adapted to engage and hold said wheels, substantially as herein described.

In witness whereof I have hereunto set my hand.

GEORGE ALBERT COOPER.

Witnesses:

S. H. NoURsE, H. C. LEE. 

